The postings appear to be legitimate rental advertisements, sometimes with pictures that match their actual location. Location and details listed in the ad are correct (sometimes word for word to the original), but the contact information has been changed with some scammers going as far as asking for a filled out credit report, deepening the breach of private information.
Sadly, the scam seems mostly to prey upon an older demographic who aren't as internet savvy about online scams or precautions. Hopefully craigslist can improve their monitoring of contact information directed toward Nigeria (though this could prove extremely difficult). We always recommend to meet directly with managers when renting, signing and exchanging funds on the premises to avoid the above mentioned scams.
More details and descriptions, read here.